package com.dgut.autoconfig;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.boot.context.event.ApplicationReadyEvent;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.ApplicationEvent;
import org.springframework.context.ApplicationListener;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.event.ApplicationEventMulticaster;
import org.springframework.context.event.SimpleApplicationEventMulticaster;
import org.springframework.context.support.AbstractApplicationContext;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
import org.springframework.stereotype.Component;

@Configuration
@EnableConfigurationProperties(CustomProperties.class)
@ConditionalOnProperty(prefix = "sai.auto",name = "enable",havingValue = "true")
public class AutoConfig {

    @Bean
    public RemoteCommandLineRunner rcr(){

        return new RemoteCommandLineRunner();
    }

//    自定义的事件发布器
    @Bean(AbstractApplicationContext.APPLICATION_EVENT_MULTICASTER_BEAN_NAME)
    ApplicationEventMulticaster customApplicationEventMulticaster(ThreadPoolTaskExecutor taskExecutor){
        SimpleApplicationEventMulticaster eventMulticaster = new SimpleApplicationEventMulticaster();
        eventMulticaster.setTaskExecutor(taskExecutor);
        return eventMulticaster;
    }
    /**
     * 自定义事件
     */
    public static class NoticeEvent extends ApplicationEvent {

        private static final Logger logger = LoggerFactory.getLogger(NoticeEvent.class);
        /**
         * 存储信息
         */
        private final String message;

        public NoticeEvent(String message){
            super(message);
            this.message = message;
            logger.info("添加事件成功！message:{}",message);
        }
        public String getMessage(){ return message;}
    }
    /**
     * 自定义事件监听器，监听{@Link NoticeEvent}事件。
     */

    @Component
    static class NoticeListener implements ApplicationListener<NoticeEvent>{
        private static final Logger logger = LoggerFactory.getLogger(NoticeListener.class);
        @Override
        public void onApplicationEvent(NoticeEvent noticeEvent){
            logger.info("事件监听器获取到 NoticeEvent,睡眠当前线程 2 秒...");
            try{
                Thread.sleep(2000);
            }catch (InterruptedException e){
                e.printStackTrace();
            }
            logger.info("NoticeEvent 的 message 属性是 : {}",noticeEvent.getMessage());
        }
    }

    @Bean
    public ApplicationListener<ApplicationReadyEvent> listener(){
        return new ApplicationListener<ApplicationReadyEvent>() {
            @Override
            public void onApplicationEvent(ApplicationReadyEvent applicationReadyEvent) {
                System.out.println("自定义 ApplicationReadyEvent 事件监听器！");
            }
        };
    }
}

